﻿using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using Ninject;
using Nx.Logging;
using Nx.Shell.AppServices;
using Nx.ViewModels;
using System.Windows;
using System.Windows.Navigation;

namespace Nx.Shell.WP7
{
    public partial class App : Application
    {
        /// <summary>
        /// Provides easy access to the root frame of the Phone Application.
        /// </summary>
        /// <returns>The root frame of the Phone Application.</returns>
        public PhoneApplicationFrame RootFrame { get; set; }

        private bool _isContentLoaded;
        protected void InitializeComponent(string uri)
        {
            if (_isContentLoaded)
            {
                return;
            }
            _isContentLoaded = true;
            System.Windows.Application.LoadComponent(this, new System.Uri(uri, System.UriKind.Relative));

            // Phone-specific initialization
            InitializePhoneApplication();

            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                // which shows areas of a page that are handed off to GPU with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }
        }

        public App()
        {
            InitializeBootstrapper();
            InitializeComponent("/Nx.Shell.WP7;component/App.xaml");
        }

        private void InitializeBootstrapper()
        {
        }

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            RootFrame = new TransitionFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            var page = e.Content as PhoneApplicationPage;
            OnCreateShell(page);

            //// Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }
        #endregion

        public void OnCreateShell(PhoneApplicationPage shell)
        {
#warning shell creation needs work
            var shellVm = KernelService.Kernel.Get<IShellViewModel>();
            shell.DataContext = shellVm;
            shellVm.View = shell;
            ////var shellVm = this.Kernel.Get<ShellViewModel>();

            // Init DispatcherHelper
            //DispatcherHelper.Initialize(shell.Dispatcher);

            // Setup V/VM
            ////shell.DataContext = shellVm;
            ////shellVm.View = shell;

            // Init DialogManager
            //var dialogManager = this.Kernel.Get<IDialogManager>();
            //dialogManager.InitializeHostView(shellVm);
        }

        #region ApplicationLifetime EventHandlers
        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void OnLaunching(object sender, LaunchingEventArgs e)
        {
        }

        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void OnActivated(object sender, ActivatedEventArgs e)
        {
        }

        // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void OnDeactivated(object sender, DeactivatedEventArgs e)
        {
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void OnClosing(object sender, ClosingEventArgs e)
        {
        }
        #endregion

        #region Error EventHandlers
        // Code to execute on Unhandled Exceptions
        protected virtual void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            using (ILogger log = KernelService.Kernel.Get<ILogFactory>().CreateLogger("SYSTEM"))
            {
                log.Fatal(e.ExceptionObject.Message);

                if (e.ExceptionObject.InnerException != null)
                {
                    log.Fatal(e.ExceptionObject.InnerException.Message);
                }
            }

            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }
        #endregion
    }
}